Thread: Solar bore pump question

Originally Posted by DeanoH

From the pic you posted, the terminals are TL, TM & TH. I'd read these as tank low, tank medium (or tank coMmon) and tank high , not WL or WH (well low or high). From the description on the controller front panel the lower LED is Source (well) Low and also labelled under current. From this I'd assume that the controller senses when the pump is dry as no water = no load = low current draw so the alarm comes up and (presumably) the motor is turned off, otherwise what's the point of the alarm ? Pretty easy to test. With the pump running lift it out of the water and see what happens.

The Over Current alarm (with the high water level graphic) has me a bit confused but perhaps it assumes a ball valve in the tank which cuts off when the tank's full which then puts back pressure on the pump which makes it work harder = higher current. Don't really know, just guessing here. It would also come on if the screw was clogged with sand or whatever. Didn't you say that the old feller said the pump had its own built in protection ?

Just a few thoughts.

Deano

From what I understand from the pump shop blokes, they use high and low water probes to turn the pump on and off. From what I understood these were sensors of some kind.

Originally Posted by DeanoH

From the pic you posted, the terminals are TL, TM & TH. I'd read these as tank low, tank medium (or tank coMmon) and tank high , not WL or WH (well low or high). From the description on the controller front panel the lower LED is Source (well) Low and also labelled under current. From this I'd assume that the controller senses when the pump is dry as no water = no load = low current draw so the alarm comes up and (presumably) the motor is turned off, otherwise what's the point of the alarm ? Pretty easy to test. With the pump running lift it out of the water and see what happens.

The Over Current alarm (with the high water level graphic) has me a bit confused but perhaps it assumes a ball valve in the tank which cuts off when the tank's full which then puts back pressure on the pump which makes it work harder = higher current. Don't really know, just guessing here. It would also come on if the screw was clogged with sand or whatever. Didn't you say that the old feller said the pump had its own built in protection ?

Just a few thoughts.

Deano

Yes , I asked him about the probes and he said they were tank probes and the pump would cut off if low. Dont know how it would start again tthough because if it started as soon as the water covered it then it would stop again pretty soon. At least with the probes it wont start untill a fair depth of water is over the pump. The young feller is not real good at replying to emails or phone calls. I still have to set up a time to swap panels. As you say , I could pull the pump up running till it stops then lower it back untill it starts. See if it starts straight away or untill its lowered down a fair bit.